【Premium Marine-Grade Construction】 Made of high-strength metal and durable rubber for corrosion resistance. OEM-quality replacement for MerCruiser part #807166A1, ensuring long-lasting performance in harsh marine environments.
【Precision Fit for V6 & V8 SternDrives】 Designed specifically for MerCruiser V6 & V8 sterndrive engines. Note: Does not fit V6 engines with one piece manifolds, or early V8 with the round pin going through flapper.
【Complete 2-Piece Kit with Grommets】 Includes 2 water shutter flappers + 4 rubber grommets for a secure, leak-free installation. Direct bolt-on replacement—no modifications needed.
【Prevents Water Backflow & Protects Engine】 Ensures proper exhaust flow and prevents water backflow when the engine is off, reducing risk of hydro-lock and costly engine damage.
【Reliable Performance & Hassle-Free Service】 Backed by a 1-year warranty. If you have any fitment issues, contact us for fast resolution—your satisfaction is guaranteed!